Automatic elevator



( No Model.) I 4 SheetsSheet 2.

J.- P. LYBARGER. UAUTOMATIG ELEVATOR.

Patented Oct. 31, 1893. r F

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(Em Model.) 4 SheetsS heet 3. v

' J. P. LYBARGER.

AUTOMATIC ELEVATQBI,

No. 507,712.- Pat ehted 00ml, 1893.-

(No Model.)

No.,507,"71Z.

AUTOMATIC ELEVATOR.

4 Sheets-Shee t 4.

Patented OQt. 31, 1893.

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UNITED STATES PATENT OFFICE.

JOHN P. LYBARGER, or VAN WERT, nssrenon TO JOHN R. ASHTON, OF

LIMA, OHIO.

AUTOMATIC ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 507,712, dated October 31, 1893.

Application filed September 13, 1892- Serial No. 445,794. (No model.)

To aZZ whom it may concern.-

l 3e it known that I, JOHN P. LYBARGER, a OItlZGH of the United States, residing at Van Wert, 1n the county of Van Wert and State of Oh1o, have invented certain new and useful Improvements in Automatic Elevators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whlch it appertains to make and use the same, reference being had to the accompanylng drawings, and to the letters of reference marked thereon, which form a part of this specification.

Myinvention relates to hoisting apparatus for mlnes, quarries and other places where d1rt,.broken stone or ore, metal or other like materlal is carried from one level to a higher, and is designed to furnish a simple and efficlent means by which that part of the cars carrying such material may be separated from their carrying trucks and raised with their loads and emptied automatically without the necesslty of an attendant atthe upper end of the shaft,'and then returned into position to receive their loads at the bottom of the shaft.

It consists mainly in providing an elevator cage or platform open on two sides with the bottom so constructed as to straddle the rail on which the car runs in the bottom of the shaft, and provided with guiding and controlllng ways by means of which the elevator car proper is retained in position while the cage 1s rising to the upper level, and so constructing the ways that the car body will be caused to dump when the platform reaches 1ts highest point and will be automatically returned to a position to receive loads as the car starts on its descent, and in other minor details of construction which will be hereinafter more fully described with reference to the accompanying drawings.

In the drawings,-Figure 1 is a side elevation showing my improvement with the car at 1ts highest point ready to dump or discharge. Fig. 2 is a similar view with the car at 1ts lowest point to receive a load. Fig. 3 1s a front elevation partly in section of the car and connections at the bottom of the frame or at its lowest position. Fig. 4 is a plan view partly in section of the car, cage or platform and carrying devices. Figs. 5 and 6 are detail views of the dumping yoke.

Referring to the drawings,A represents the elevator proper consisting of an open cage or frame having corner posts a a, carrying rollers a, bearing against the uprights b, of the guiding frame B, which is suitably braced by cross pieces b. The elevator cage is connected at its upper end with a hoisting rope, as usual. Inside the elevator cage is mounted a yoke C (see Figs. 1 and 3), consisting of a crossbar 0', and two uprights O 0 horizontal side piece 0 carried upon rollers c, mounted upon tracks 0', fastened to the side pieces of the cage. This yoke has a sidewise movement transversely in the cage, such movement being controlled by guides F F mounted in the frame B. The yoke carries at a point forward of its center, open bearings D on either side, the obj ectof which is to provide rests for the pivot of the car body to be elevated. At the rear end of the yoke are horizontal rests D to retain it in a horizontal position while the cage is being elevated. The guides F F mounted in the frame are vertical from the lower end of the shaft until they reach'a point near the dumping position where they are inclined forward at an angle of about forty-five degrees, as shown, and then carried upward. To the front standards of the cage are journaled on each side, rollers G G, to sustain the forward end of the car body until such time as the car is ready to dump. To the rear standards of the cage, and fastened to a cross-bar running from one to the other, is secured a spring or springs M bearing on the upper side of the rear end of the car body in its upper position, the object of which is to return the car to a horizontal position when the load is emptied from it.

In operation the cage is lowered to the bot tom of the shaft until the lower portions of the yoke comprising the side pieces 0 having the open bearings D, are somewhat below the level of the track on which the cars run at the bottom of the shaft, this position of the parts being more clearly seen in Figs. 2 and 3. The car is then pushed into the cage between the uprights C of the yoke, the car body H being, by preference, separable from the running gear H and having at its center a cross bar or trunnion J the endsjof which are rounded and project from the opposite sides thereof as clearly seen in Fig. 3. To the forward end of the car on each side is also secured a plate K. The trunnionsj, are in such position on the car body H, that when the car has been pushed into the cage to the position indicated in Figs. 2 and 3, they will lie directly above and in line with the open bearings D, on the side pieces 0 of the yoke, and the plates K are likewise so placed on the sides of the car body as to lie in the same vertical plane with rollers Gsecured to the innerfaoes of the uprights A of the frame of the cage. Thus it will be seen that as the cage is elevated from the position seen in Figs. 2 and 3, the open bearings D and rollers Gon the yoke and uprights will take under, respectively, the trunnionsj and plates K on the car body H, and that the horizontal rests D will like Wise take under and support the rear end of the car body H, whereby said car body is lifted off its running gear and carried upward in the shaft with the elevator cage. As the car body H is held securelyon the side pieces 0 of the yoke with the open bearings D on which its trunnionsj engage, and as this said yoke is guided in its upward and downward movement by the vertical guide ways F, F, with which the rollers L 011 the uprights C engage, it is evident that the car body H will be held in the same position in the car until the rollers L reach the angular portion Fof guides F when the yoke bearing the car body II with it, will be forced sidewise in the elevator cage assuming the position seen in Fig. 1. The length of the plates K, on the car body H is such that when the yoke has been pushed sidewise by the angular portion F, of the guides F, said plates will pass the rollers G, on the uprights of the elevator cage, allowing the forward end of the car body H to fall as seen in Fig. 1 whereby the said car body turns upon the trunnions j, raising its rear end off the rests D, compressing springs M, and dumping its contents forward into a suitably arranged chute, as seen in Fig. 1. After the dumping has been elfected, the tension of the spring or springs M, upon the rear end of the car body H, returns the same to its normal horizontal position, and as the ma chinery of the hoisting apparatus is reversed, to lower the cage in the shaft, the angular portions F of guides F act in the reverse inanner drawing the car body H, into the cage, and lowering it down again onto its running gear H which had been left in position to receive it at the bottom of the shaft as will be understood.

Having thus described my invention, what I claim is 1. In a hoisting apparatus, the combination with a cage, of a yoke movably mounted therein and adapted to carry the car body, a support on the cage for upholding one end of said car body, and means for movlng said yoke laterally in the cage whereby the car body is withdrawn from engagement with lts support, substantially as set forth.

2. In a hoisting apparatus,the combination of a cage open at the bottom and ends, ayoke adapted to travel on a track in the cage,bearings carried by the yoke for sustaining a car body and plates and rollers adapted to hold the car body in a horizontal position and guides adapted to act on the yoke to push 1t forward and thereby release the plates from the rollers and dump the car.

3. In a hoisting apparatus, the combination with a cage, of a yoke movably mounted therein, said yoke being provided with bearings adapted to receive trunnions mounted on the car body, guides adapted to move the yoke laterally in the cage, means liberated by the movement of the yoke for holding said car body in a horizontal position and means for returning said car body to a horizontal position after the load is dumped, substantially as set forth.

t. In a hoisting apparatus, the combination with a cage, of a yoke movably mounted therein, said yoke being provided with open bearings adapted to take under the trunnions of the car body, rests mounted on said yoke behind said bearings and adapted to support the rear end of the car body, rollers on the cage adapted to engage projections on the car body, guides for moving the yoke laterally 1n the cage and springs mounted on the cage and adapted to return the car body to its horizontal position, substantially as set forth.

In testimony whereofI affix my signature in presence of two witnesses.

JOHN P. LYBARGER.

XVitnesses:

H. S. PROPHET, (3. II. FOLSOM. 

